what are the three varibles ?
I know that one of them is control.
http://www.sciencebuddies.org/science-fair-projects/project_variables.shtml
thank you so much!
The three variables you are referring to are most likely the variables in an experiment or study. In the context of scientific research, there are typically three types of variables: independent variables, dependent variables, and control variables.
1. Independent variable: This is the variable that is purposely manipulated or changed by the researcher. It is the variable believed to have an effect on the dependent variable. For example, if you are studying the effect of different amounts of fertilizer on plant growth, the amount of fertilizer would be the independent variable.
2. Dependent variable: This is the variable that is measured or observed to determine the outcome or the effect of the independent variable. In the plant growth study, the dependent variable would be the height or the growth rate of the plants.
3. Control variable: This is the variable that is kept constant or unchanged throughout the experiment to ensure that any changes observed are due to the independent variable and not any other factors. It helps establish a baseline for comparison. In the plant growth study, the control variables could include factors such as the type of soil used, the amount of sunlight the plants receive, or the temperature of the environment.
To determine the other two variables in a specific experiment or study, you need to identify what is being manipulated (independent variable) and what is being measured (dependent variable). Additionally, consider the factors that need to be controlled (control variables). By considering these aspects, you can identify the three variables in a given context.